Rise Armament specializes in high-quality firearms, parts, and accessories. All Rise Armament parts are made according to strict procedures, which are more rigorous than typical gun manufacturing processes. The certification regulations assure that their builds are safe, reliable, and of superior quality. The RA-535 is an advanced-performance trigger favored by many with a crazy-fast reset, with a smoother pull and allows you to fire more rapidly and accurately. The RA-535 is precision CNC machined from high-grade, heat-treated tool steel and aluminum. Upgrade your firearm with the simple to install single-stage trigger.